/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.classfile.attribute.visitor;

import proguard.classfile.*;
import proguard.classfile.attribute.*;
import proguard.classfile.attribute.module.*;
import proguard.classfile.attribute.preverification.*;
import proguard.util.*;

import java.util.List;

import a.annotation.proguard.classfile.attribute.annotation.*;

/**
 * This AttributeVisitor delegates its visits another AttributeVisitor, but only when the visited attribute has a name
 * that that matches a given regular expression.
 *
 * @author Eric Lafortune
 */
public class AttributeNameFilter implements AttributeVisitor {
    private final StringMatcher regularExpressionMatcher;
    private final AttributeVisitor attributeVisitor;

    /**
     * Creates a new AttributeNameFilter.
     * 
     * @param regularExpression the regular expression against which attribute names will be matched.
     * @param attributeVisitor the <code>AttributeVisitor</code> to which visits will be delegated.
     */
    public AttributeNameFilter(String regularExpression, AttributeVisitor attributeVisitor) {
        this(new ListParser(new NameParser()).parse(regularExpression), attributeVisitor);
    }

    /**
     * Creates a new AttributeNameFilter.
     * 
     * @param regularExpression the regular expression against which attribute names will be matched.
     * @param attributeVisitor the <code>AttributeVisitor</code> to which visits will be delegated.
     */
    public AttributeNameFilter(List regularExpression, AttributeVisitor attributeVisitor) {
        this(new ListParser(new NameParser()).parse(regularExpression), attributeVisitor);
    }

    /**
     * Creates a new AttributeNameFilter.
     * 
     * @param regularExpressionMatcher the string matcher against which attribute names will be matched.
     * @param attributeVisitor the <code>AttributeVisitor</code> to which visits will be delegated.
     */
    public AttributeNameFilter(StringMatcher regularExpressionMatcher, AttributeVisitor attributeVisitor) {
        this.regularExpressionMatcher = regularExpressionMatcher;
        this.attributeVisitor = attributeVisitor;
    }

    // Implementations for AttributeVisitor.

    public void visitUnknownAttribute(Clazz clazz, UnknownAttribute unknownAttribute) {
        if (accepted(clazz, unknownAttribute)) {
            attributeVisitor.visitUnknownAttribute(clazz, unknownAttribute);
        }
    }

    public void visitBootstrapMethodsAttribute(Clazz clazz, BootstrapMethodsAttribute bootstrapMethodsAttribute) {
        if (accepted(clazz, bootstrapMethodsAttribute)) {
            attributeVisitor.visitBootstrapMethodsAttribute(clazz, bootstrapMethodsAttribute);
        }
    }

    public void visitSourceFileAttribute(Clazz clazz, SourceFileAttribute sourceFileAttribute) {
        if (accepted(clazz, sourceFileAttribute)) {
            attributeVisitor.visitSourceFileAttribute(clazz, sourceFileAttribute);
        }
    }

    public void visitSourceDirAttribute(Clazz clazz, SourceDirAttribute sourceDirAttribute) {
        if (accepted(clazz, sourceDirAttribute)) {
            attributeVisitor.visitSourceDirAttribute(clazz, sourceDirAttribute);
        }
    }

    public void visitInnerClassesAttribute(Clazz clazz, InnerClassesAttribute innerClassesAttribute) {
        if (accepted(clazz, innerClassesAttribute)) {
            attributeVisitor.visitInnerClassesAttribute(clazz, innerClassesAttribute);
        }
    }

    public void visitEnclosingMethodAttribute(Clazz clazz, EnclosingMethodAttribute enclosingMethodAttribute) {
        if (accepted(clazz, enclosingMethodAttribute)) {
            attributeVisitor.visitEnclosingMethodAttribute(clazz, enclosingMethodAttribute);
        }
    }

    public void visitModuleAttribute(Clazz clazz, ModuleAttribute moduleAttribute) {
        if (accepted(clazz, moduleAttribute)) {
            attributeVisitor.visitModuleAttribute(clazz, moduleAttribute);
        }
    }

    public void visitModuleMainClassAttribute(Clazz clazz, ModuleMainClassAttribute moduleMainClassAttribute) {
        if (accepted(clazz, moduleMainClassAttribute)) {
            attributeVisitor.visitModuleMainClassAttribute(clazz, moduleMainClassAttribute);
        }
    }

    public void visitModulePackagesAttribute(Clazz clazz, ModulePackagesAttribute modulePackagesAttribute) {
        if (accepted(clazz, modulePackagesAttribute)) {
            attributeVisitor.visitModulePackagesAttribute(clazz, modulePackagesAttribute);
        }
    }

    public void visitDeprecatedAttribute(Clazz clazz, DeprecatedAttribute deprecatedAttribute) {
        if (accepted(clazz, deprecatedAttribute)) {
            attributeVisitor.visitDeprecatedAttribute(clazz, deprecatedAttribute);
        }
    }

    public void visitDeprecatedAttribute(Clazz clazz, Field field, DeprecatedAttribute deprecatedAttribute) {
        if (accepted(clazz, deprecatedAttribute)) {
            attributeVisitor.visitDeprecatedAttribute(clazz, field, deprecatedAttribute);
        }
    }

    public void visitDeprecatedAttribute(Clazz clazz, Method method, DeprecatedAttribute deprecatedAttribute) {
        if (accepted(clazz, deprecatedAttribute)) {
            attributeVisitor.visitDeprecatedAttribute(clazz, method, deprecatedAttribute);
        }
    }

    public void visitSyntheticAttribute(Clazz clazz, SyntheticAttribute syntheticAttribute) {
        if (accepted(clazz, syntheticAttribute)) {
            attributeVisitor.visitSyntheticAttribute(clazz, syntheticAttribute);
        }
    }

    public void visitSyntheticAttribute(Clazz clazz, Field field, SyntheticAttribute syntheticAttribute) {
        if (accepted(clazz, syntheticAttribute)) {
            attributeVisitor.visitSyntheticAttribute(clazz, field, syntheticAttribute);
        }
    }

    public void visitSyntheticAttribute(Clazz clazz, Method method, SyntheticAttribute syntheticAttribute) {
        if (accepted(clazz, syntheticAttribute)) {
            attributeVisitor.visitSyntheticAttribute(clazz, method, syntheticAttribute);
        }
    }

    public void visitSignatureAttribute(Clazz clazz, SignatureAttribute signatureAttribute) {
        if (accepted(clazz, signatureAttribute)) {
            attributeVisitor.visitSignatureAttribute(clazz, signatureAttribute);
        }
    }

    public void visitSignatureAttribute(Clazz clazz, Field field, SignatureAttribute signatureAttribute) {
        if (accepted(clazz, signatureAttribute)) {
            attributeVisitor.visitSignatureAttribute(clazz, field, signatureAttribute);
        }
    }

    public void visitSignatureAttribute(Clazz clazz, Method method, SignatureAttribute signatureAttribute) {
        if (accepted(clazz, signatureAttribute)) {
            attributeVisitor.visitSignatureAttribute(clazz, method, signatureAttribute);
        }
    }

    public void visitConstantValueAttribute(Clazz clazz, Field field, ConstantValueAttribute constantValueAttribute) {
        if (accepted(clazz, constantValueAttribute)) {
            attributeVisitor.visitConstantValueAttribute(clazz, field, constantValueAttribute);
        }
    }

    public void visitMethodParametersAttribute(Clazz clazz, Method method,
        MethodParametersAttribute exceptionsAttribute) {
        if (accepted(clazz, exceptionsAttribute)) {
            attributeVisitor.visitMethodParametersAttribute(clazz, method, exceptionsAttribute);
        }
    }

    public void visitExceptionsAttribute(Clazz clazz, Method method, ExceptionsAttribute exceptionsAttribute) {
        if (accepted(clazz, exceptionsAttribute)) {
            attributeVisitor.visitExceptionsAttribute(clazz, method, exceptionsAttribute);
        }
    }

    public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute) {
        if (accepted(clazz, codeAttribute)) {
            attributeVisitor.visitCodeAttribute(clazz, method, codeAttribute);
        }
    }

    public void visitStackMapAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute,
        StackMapAttribute stackMapAttribute) {
        if (accepted(clazz, stackMapAttribute)) {
            attributeVisitor.visitStackMapAttribute(clazz, method, codeAttribute, stackMapAttribute);
        }
    }

    public void visitStackMapTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute,
        StackMapTableAttribute stackMapTableAttribute) {
        if (accepted(clazz, stackMapTableAttribute)) {
            attributeVisitor.visitStackMapTableAttribute(clazz, method, codeAttribute, stackMapTableAttribute);
        }
    }

    public void visitLineNumberTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute,
        LineNumberTableAttribute lineNumberTableAttribute) {
        if (accepted(clazz, lineNumberTableAttribute)) {
            attributeVisitor.visitLineNumberTableAttribute(clazz, method, codeAttribute, lineNumberTableAttribute);
        }
    }

    public void visitLocalVariableTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute,
        LocalVariableTableAttribute localVariableTableAttribute) {
        if (accepted(clazz, localVariableTableAttribute)) {
            attributeVisitor.visitLocalVariableTableAttribute(clazz, method, codeAttribute,
                localVariableTableAttribute);
        }
    }

    public void visitLocalVariableTypeTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute,
        LocalVariableTypeTableAttribute localVariableTypeTableAttribute) {
        if (accepted(clazz, localVariableTypeTableAttribute)) {
            attributeVisitor.visitLocalVariableTypeTableAttribute(clazz, method, codeAttribute,
                localVariableTypeTableAttribute);
        }
    }

    public void visitRuntimeVisibleAnnotationsAttribute(Clazz clazz,
        RuntimeVisibleAnnotationsAttribute runtimeVisibleAnnotationsAttribute) {
        if (accepted(clazz, runtimeVisibleAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeVisibleAnnotationsAttribute(clazz, runtimeVisibleAnnotationsAttribute);
        }
    }

    public void visitRuntimeVisibleAnnotationsAttribute(Clazz clazz, Field field,
        RuntimeVisibleAnnotationsAttribute runtimeVisibleAnnotationsAttribute) {
        if (accepted(clazz, runtimeVisibleAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeVisibleAnnotationsAttribute(clazz, field, runtimeVisibleAnnotationsAttribute);
        }
    }

    public void visitRuntimeVisibleAnnotationsAttribute(Clazz clazz, Method method,
        RuntimeVisibleAnnotationsAttribute runtimeVisibleAnnotationsAttribute) {
        if (accepted(clazz, runtimeVisibleAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeVisibleAnnotationsAttribute(clazz, method, runtimeVisibleAnnotationsAttribute);
        }
    }

    public void visitRuntimeInvisibleAnnotationsAttribute(Clazz clazz,
        RuntimeInvisibleAnnotationsAttribute runtimeInvisibleAnnotationsAttribute) {
        if (accepted(clazz, runtimeInvisibleAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeInvisibleAnnotationsAttribute(clazz, runtimeInvisibleAnnotationsAttribute);
        }
    }

    public void visitRuntimeInvisibleAnnotationsAttribute(Clazz clazz, Field field,
        RuntimeInvisibleAnnotationsAttribute runtimeInvisibleAnnotationsAttribute) {
        if (accepted(clazz, runtimeInvisibleAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeInvisibleAnnotationsAttribute(clazz, field,
                runtimeInvisibleAnnotationsAttribute);
        }
    }

    public void visitRuntimeInvisibleAnnotationsAttribute(Clazz clazz, Method method,
        RuntimeInvisibleAnnotationsAttribute runtimeInvisibleAnnotationsAttribute) {
        if (accepted(clazz, runtimeInvisibleAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeInvisibleAnnotationsAttribute(clazz, method,
                runtimeInvisibleAnnotationsAttribute);
        }
    }

    public void visitRuntimeVisibleParameterAnnotationsAttribute(Clazz clazz, Method method,
        RuntimeVisibleParameterAnnotationsAttribute runtimeVisibleParameterAnnotationsAttribute) {
        if (accepted(clazz, runtimeVisibleParameterAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeVisibleParameterAnnotationsAttribute(clazz, method,
                runtimeVisibleParameterAnnotationsAttribute);
        }
    }

    public void visitRuntimeInvisibleParameterAnnotationsAttribute(Clazz clazz, Method method,
        RuntimeInvisibleParameterAnnotationsAttribute runtimeInvisibleParameterAnnotationsAttribute) {
        if (accepted(clazz, runtimeInvisibleParameterAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeInvisibleParameterAnnotationsAttribute(clazz, method,
                runtimeInvisibleParameterAnnotationsAttribute);
        }
    }

    public void visitRuntimeVisibleTypeAnnotationsAttribute(Clazz clazz,
        RuntimeVisibleTypeAnnotationsAttribute runtimeVisibleTypeAnnotationsAttribute) {
        if (accepted(clazz, runtimeVisibleTypeAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeVisibleTypeAnnotationsAttribute(clazz, runtimeVisibleTypeAnnotationsAttribute);
        }
    }

    public void visitRuntimeVisibleTypeAnnotationsAttribute(Clazz clazz, Field field,
        RuntimeVisibleTypeAnnotationsAttribute runtimeVisibleTypeAnnotationsAttribute) {
        if (accepted(clazz, runtimeVisibleTypeAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeVisibleTypeAnnotationsAttribute(clazz, field,
                runtimeVisibleTypeAnnotationsAttribute);
        }
    }

    public void visitRuntimeVisibleTypeAnnotationsAttribute(Clazz clazz, Method method,
        RuntimeVisibleTypeAnnotationsAttribute runtimeVisibleTypeAnnotationsAttribute) {
        if (accepted(clazz, runtimeVisibleTypeAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeVisibleTypeAnnotationsAttribute(clazz, method,
                runtimeVisibleTypeAnnotationsAttribute);
        }
    }

    public void visitRuntimeVisibleTypeAnnotationsAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute,
        RuntimeVisibleTypeAnnotationsAttribute runtimeVisibleTypeAnnotationsAttribute) {
        if (accepted(clazz, runtimeVisibleTypeAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeVisibleTypeAnnotationsAttribute(clazz, method, codeAttribute,
                runtimeVisibleTypeAnnotationsAttribute);
        }
    }

    public void visitRuntimeInvisibleTypeAnnotationsAttribute(Clazz clazz,
        RuntimeInvisibleTypeAnnotationsAttribute runtimeInvisibleTypeAnnotationsAttribute) {
        if (accepted(clazz, runtimeInvisibleTypeAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeInvisibleTypeAnnotationsAttribute(clazz,
                runtimeInvisibleTypeAnnotationsAttribute);
        }
    }

    public void visitRuntimeInvisibleTypeAnnotationsAttribute(Clazz clazz, Field field,
        RuntimeInvisibleTypeAnnotationsAttribute runtimeInvisibleTypeAnnotationsAttribute) {
        if (accepted(clazz, runtimeInvisibleTypeAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeInvisibleTypeAnnotationsAttribute(clazz, field,
                runtimeInvisibleTypeAnnotationsAttribute);
        }
    }

    public void visitRuntimeInvisibleTypeAnnotationsAttribute(Clazz clazz, Method method,
        RuntimeInvisibleTypeAnnotationsAttribute runtimeInvisibleTypeAnnotationsAttribute) {
        if (accepted(clazz, runtimeInvisibleTypeAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeInvisibleTypeAnnotationsAttribute(clazz, method,
                runtimeInvisibleTypeAnnotationsAttribute);
        }
    }

    public void visitRuntimeInvisibleTypeAnnotationsAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute,
        RuntimeInvisibleTypeAnnotationsAttribute runtimeInvisibleTypeAnnotationsAttribute) {
        if (accepted(clazz, runtimeInvisibleTypeAnnotationsAttribute)) {
            attributeVisitor.visitRuntimeInvisibleTypeAnnotationsAttribute(clazz, method, codeAttribute,
                runtimeInvisibleTypeAnnotationsAttribute);
        }
    }

    public void visitAnnotationDefaultAttribute(Clazz clazz, Method method,
        AnnotationDefaultAttribute annotationDefaultAttribute) {
        if (accepted(clazz, annotationDefaultAttribute)) {
            attributeVisitor.visitAnnotationDefaultAttribute(clazz, method, annotationDefaultAttribute);
        }
    }

    // Small utility methods.

    private boolean accepted(Clazz clazz, Attribute attribute) {
        return regularExpressionMatcher.matches(attribute.getAttributeName(clazz));
    }
}
